devcam server: do not use os.Getenv

Since 0d854e106c696a759f0a55ef4f5ea43cabc04e38, we do not
use the env directly, but a copy of it, so os.Getenv does
not work to retrieve vars that were set in that copy.

Change-Id: Ibc6ab40ea2ee51e1dea6a5e9ceac782304e0039a
devcam put/get: do not use os.Getenv

Change-Id: I2e5b247835ec3febe7f312cabcfbf73f58bf43dd
devcam put/get: read CAMLI_QUIET from current env

reverts 0015237713a8ee11532dd0c99f0ea1c85ad26982

Change-Id: Ie8ec46c1971a014cafe05d160d2f65a84d8cd466
fs: unmount on linux

Unmount the mount point on quit key on Linux. Adding fallbacks
in case of umount failure.

Change-Id: Ibd52ff1886d396bb424ac8d8ba9f9d8cb94a36f9
Clean up testing in share_test.go

Change-Id: I481d440636590086f11d8e97d0eb6fcf31f4a097
Merge "Clean up testing in share_test.go"
Move the button to create permanode into toolbar.

Also:
* Make the entire BlobItemController a drop target for new files,
  except for when over a set, then the set is the target.
* Minor visual refinements to highlight states during dragging.
* Fix bugs/flicker in dragdrop code.
* Fix bug where there is an empty button in toolbar before the first
  item is selected.

Change-Id: I3c40a476395c885477e1316e6ff168399640e347
camput attr: support -del

Change-Id: I28460fed5b572ba9a83cfcb04f38e42124fa723f
Merge "camput attr: support -del"
Move to "G+-style" selection.

To select an item, click the checkmark that overlays on rollover.
To navigate, just click anywhere else on the item.

Also move selection from additive by default rather than exclusive.

Change-Id: I47e6ca1942fe1fdaaf615f6ab0e0a547f1a51735
(*syncCmd).storageFromParam: Added missing value used in a fmt.Errorf